There not such schedule available in onboarding which will keep the count and inform other recruiters.
We can send notifications to recruiters group(which may include all recruiters of rcm) each time we initiate onboarding. Notification type Recruiter notification and notify at create activity.
Recruiter A initiate 5 and Recruiter B initiate 2. Then there will be 7 notification send to all recruiters. This way we can achieve our count.
This will be the simple way.